/Engine/Plugins/Developer/Concert/ConcertMain/Source/ConcertTransport/Public/IConcertEndpoint.h
Subscribe an handler for event received by this endpoint, this will handle published event
template<typename EventType, typename HandlerType> void SubscribeEventHandler ( HandlerType * Handler, typename [TConcertRawEventHandler](API\Plugins\ConcertTransport\TConcertRawEventHandler)< HandlerType >::FFuncType Func )